I’ve had this .45 Auto Rim kicking around in my “whatthis” box for some time. The case appears to be copper…not discolored from previous corrosion (note no pitting on the case), but either made from copper or copper-plated. It is not magnetic.
I have no idea of the age or history, I don’t even remember where I got it. Could this be a proof round? Most early proof rounds I’ve seen use a blackened case, but those are all either WRA or REM-UMC…I don’t know what Peters proof identification was.
Thanks in advance!